MOKHAMAD SYEFRI ABDILLAH; DR.NURIYANTO S.T,M.T. ANALISIS PERBAIKAN KUALITAS DENGAN PENDEKATAN SIX SIGMA UNTUK PRODUK CACAT CUP 220ML PADA PT. XYZ. Jurnal Cakrawala Ilmiah, [S. l.], v. 2, n. 11, p. 4361–4370, 2023. DOI: 10.53625/jcijurnalcakrawalailmiah.v2i11.6138. Disponível em: https://mail.bajangjournal.com/index.php/JCI/article/view/6138. Acesso em: 5 jul. 2025.